As coding of interfaces is platform agnostic but manifests differently once implemented and run, this could be a major opportunity to see how user behavior differs across platforms (according to how interface elements/widgets, such as buttons, are variously displayed on a given platform). Could implement an open source system for conveying UX statistics to libre researchers, who operate and analyze a statistical API for UX research, especially to the benefit of FLOSS creators, users.

Opt-out by default to respect user privacy.